upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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308 lines
6.6 KiB
308 lines
6.6 KiB
/*
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* Copyright 2006 Freescale Semiconductor
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* Jeff Brown
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* Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <watchdog.h>
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#include <command.h>
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#include <asm/cache.h>
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#include <mpc86xx.h>
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#if defined(CONFIG_OF_FLAT_TREE)
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#include <ft_build.h>
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#endif
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#ifdef CONFIG_MPC8641HPCN
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extern void mpc8641_reset_board(cmd_tbl_t *cmdtp, int flag,
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int argc, char *argv[]);
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#endif
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int
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checkcpu(void)
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{
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sys_info_t sysinfo;
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uint pvr, svr;
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uint ver;
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uint major, minor;
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uint lcrr; /* local bus clock ratio register */
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uint clkdiv; /* clock divider portion of lcrr */
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puts("Freescale PowerPC\n");
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pvr = get_pvr();
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ver = PVR_VER(pvr);
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major = PVR_MAJ(pvr);
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minor = PVR_MIN(pvr);
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puts("CPU:\n");
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puts(" Core: ");
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switch (ver) {
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case PVR_VER(PVR_86xx):
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puts("E600");
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break;
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default:
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puts("Unknown");
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break;
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}
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printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
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svr = get_svr();
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ver = SVR_VER(svr);
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major = SVR_MAJ(svr);
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minor = SVR_MIN(svr);
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puts(" System: ");
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switch (ver) {
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case SVR_8641:
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if (SVR_SUBVER(svr) == 1) {
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puts("8641D");
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} else {
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puts("8641");
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}
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break;
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default:
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puts("Unknown");
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break;
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}
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printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);
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get_sys_info(&sysinfo);
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puts(" Clocks: ");
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printf("CPU:%4lu MHz, ", sysinfo.freqProcessor / 1000000);
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printf("MPX:%4lu MHz, ", sysinfo.freqSystemBus / 1000000);
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printf("DDR:%4lu MHz, ", sysinfo.freqSystemBus / 2000000);
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#if defined(CFG_LBC_LCRR)
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lcrr = CFG_LBC_LCRR;
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#else
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{
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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volatile ccsr_lbc_t *lbc = &immap->im_lbc;
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lcrr = lbc->lcrr;
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}
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#endif
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clkdiv = lcrr & 0x0f;
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if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) {
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printf("LBC:%4lu MHz\n",
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sysinfo.freqSystemBus / 1000000 / clkdiv);
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} else {
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printf(" LBC: unknown (lcrr: 0x%08x)\n", lcrr);
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}
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puts(" L2: ");
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if (get_l2cr() & 0x80000000)
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puts("Enabled\n");
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else
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puts("Disabled\n");
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return 0;
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}
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static inline void
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soft_restart(unsigned long addr)
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{
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#ifndef CONFIG_MPC8641HPCN
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/*
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* SRR0 has system reset vector, SRR1 has default MSR value
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* rfi restores MSR from SRR1 and sets the PC to the SRR0 value
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*/
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__asm__ __volatile__ ("mtspr 26, %0" :: "r" (addr));
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__asm__ __volatile__ ("li 4, (1 << 6)" ::: "r4");
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__asm__ __volatile__ ("mtspr 27, 4");
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__asm__ __volatile__ ("rfi");
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#else /* CONFIG_MPC8641HPCN */
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out8(PIXIS_BASE + PIXIS_RST, 0);
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#endif /* !CONFIG_MPC8641HPCN */
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while (1) ; /* not reached */
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}
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/*
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* No generic way to do board reset. Simply call soft_reset.
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*/
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void
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do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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#ifndef CONFIG_MPC8641HPCN
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#ifdef CFG_RESET_ADDRESS
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ulong addr = CFG_RESET_ADDRESS;
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#else
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/*
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* note: when CFG_MONITOR_BASE points to a RAM address,
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* CFG_MONITOR_BASE - sizeof (ulong) is usually a valid
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* address. Better pick an address known to be invalid on your
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* system and assign it to CFG_RESET_ADDRESS.
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*/
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ulong addr = CFG_MONITOR_BASE - sizeof(ulong);
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#endif
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/* flush and disable I/D cache */
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__asm__ __volatile__ ("mfspr 3, 1008" ::: "r3");
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__asm__ __volatile__ ("ori 5, 5, 0xcc00" ::: "r5");
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__asm__ __volatile__ ("ori 4, 3, 0xc00" ::: "r4");
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__asm__ __volatile__ ("andc 5, 3, 5" ::: "r5");
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__asm__ __volatile__ ("sync");
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__asm__ __volatile__ ("mtspr 1008, 4");
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__asm__ __volatile__ ("isync");
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__asm__ __volatile__ ("sync");
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__asm__ __volatile__ ("mtspr 1008, 5");
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__asm__ __volatile__ ("isync");
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__asm__ __volatile__ ("sync");
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soft_restart(addr);
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#else /* CONFIG_MPC8641HPCN */
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mpc8641_reset_board(cmdtp, flag, argc, argv);
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#endif /* !CONFIG_MPC8641HPCN */
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while (1) ; /* not reached */
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}
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/*
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* Get timebase clock frequency
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*/
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unsigned long
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get_tbclk(void)
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{
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sys_info_t sys_info;
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get_sys_info(&sys_info);
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return (sys_info.freqSystemBus + 3L) / 4L;
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}
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#if defined(CONFIG_WATCHDOG)
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void
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watchdog_reset(void)
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{
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}
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#endif /* CONFIG_WATCHDOG */
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#if defined(CONFIG_DDR_ECC)
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void
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dma_init(void)
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{
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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volatile ccsr_dma_t *dma = &immap->im_dma;
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dma->satr0 = 0x00040000;
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dma->datr0 = 0x00040000;
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asm("sync; isync");
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}
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uint
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dma_check(void)
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{
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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volatile ccsr_dma_t *dma = &immap->im_dma;
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volatile uint status = dma->sr0;
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/* While the channel is busy, spin */
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while ((status & 4) == 4) {
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status = dma->sr0;
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}
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if (status != 0) {
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printf("DMA Error: status = %x\n", status);
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}
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return status;
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}
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int
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dma_xfer(void *dest, uint count, void *src)
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{
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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volatile ccsr_dma_t *dma = &immap->im_dma;
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dma->dar0 = (uint) dest;
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dma->sar0 = (uint) src;
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dma->bcr0 = count;
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dma->mr0 = 0xf000004;
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asm("sync;isync");
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dma->mr0 = 0xf000005;
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asm("sync;isync");
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return dma_check();
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}
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#endif /* CONFIG_DDR_ECC */
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#ifdef CONFIG_OF_FLAT_TREE
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void
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ft_cpu_setup(void *blob, bd_t *bd)
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{
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u32 *p;
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ulong clock;
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int len;
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clock = bd->bi_busfreq;
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p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(clock);
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p = ft_get_prop(blob, "/" OF_SOC "/serial@4500/clock-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(clock);
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p = ft_get_prop(blob, "/" OF_SOC "/serial@4600/clock-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(clock);
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#if defined(CONFIG_MPC86XX_TSEC1)
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p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/mac-address", &len);
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memcpy(p, bd->bi_enetaddr, 6);
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#endif
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#if defined(CONFIG_MPC86XX_TSEC2)
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p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/mac-address", &len);
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memcpy(p, bd->bi_enet1addr, 6);
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#endif
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#if defined(CONFIG_MPC86XX_TSEC3)
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p = ft_get_prop(blob, "/" OF_SOC "/ethernet@26000/mac-address", &len);
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memcpy(p, bd->bi_enet2addr, 6);
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#endif
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#if defined(CONFIG_MPC86XX_TSEC4)
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p = ft_get_prop(blob, "/" OF_SOC "/ethernet@27000/mac-address", &len);
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memcpy(p, bd->bi_enet3addr, 6);
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#endif
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}
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#endif
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